hw: Convert from BlockDriverState to BlockBackend, mostly

Device models should access their block backends only through the
block-backend.h API.  Convert them, and drop direct includes of
inappropriate headers.

Just four uses of BlockDriverState are left:

* The Xen paravirtual block device backend (xen_disk.c) opens images
  itself when set up via xenbus, bypassing blockdev.c.  I figure it
  should go through qmp_blockdev_add() instead.

* Device model "usb-storage" prompts for keys.  No other device model
  does, and this one probably shouldn't do it, either.

* ide_issue_trim_cb() uses bdrv_aio_discard() instead of
  blk_aio_discard() because it fishes its backend out of a BlockAIOCB,
  which has only the BlockDriverState.

* PC87312State has an unused BlockDriverState[] member.

The next two commits take care of the latter two.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 14 insertions, 14 deletions

diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 78280a881a..ff1106b6c9 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -246,7 +246,7 @@ typedef struct Flash {
 
     uint32_t r;
 
-    BlockDriverState *bdrv;
+    BlockBackend *blk;
 
     uint8_t *storage;
     uint32_t size;
@@ -280,7 +280,7 @@ typedef struct M25P80Class {
 #define M25P80_GET_CLASS(obj) \
      OBJECT_GET_CLASS(M25P80Class, (obj), TYPE_M25P80)
 
-static void bdrv_sync_complete(void *opaque, int ret)
+static void blk_sync_complete(void *opaque, int ret)
 {
     /* do nothing. Masters do not directly interact with the backing store,
      * only the working copy so no mutexing required.
@@ -289,20 +289,20 @@ static void bdrv_sync_complete(void *opaque, int ret)
 
 static void flash_sync_page(Flash *s, int page)
 {
-    int bdrv_sector, nb_sectors;
+    int blk_sector, nb_sectors;
     QEMUIOVector iov;
 
-    if (!s->bdrv || bdrv_is_read_only(s->bdrv)) {
+    if (!s->blk || blk_is_read_only(s->blk)) {
         return;
     }
 
-    bdrv_sector = (page * s->pi->page_size) / BDRV_SECTOR_SIZE;
+    blk_sector = (page * s->pi->page_size) / BDRV_SECTOR_SIZE;
     nb_sectors = DIV_ROUND_UP(s->pi->page_size, BDRV_SECTOR_SIZE);
     qemu_iovec_init(&iov, 1);
-    qemu_iovec_add(&iov, s->storage + bdrv_sector * BDRV_SECTOR_SIZE,
+    qemu_iovec_add(&iov, s->storage + blk_sector * BDRV_SECTOR_SIZE,
                    nb_sectors * BDRV_SECTOR_SIZE);
-    bdrv_aio_writev(s->bdrv, bdrv_sector, &iov, nb_sectors, bdrv_sync_complete,
-                    NULL);
+    blk_aio_writev(s->blk, blk_sector, &iov, nb_sectors, blk_sync_complete,
+                   NULL);
 }
 
 static inline void flash_sync_area(Flash *s, int64_t off, int64_t len)
@@ -310,7 +310,7 @@ static inline void flash_sync_area(Flash *s, int64_t off, int64_t len)
     int64_t start, end, nb_sectors;
     QEMUIOVector iov;
 
-    if (!s->bdrv || bdrv_is_read_only(s->bdrv)) {
+    if (!s->blk || blk_is_read_only(s->blk)) {
         return;
     }
 
@@ -321,7 +321,7 @@ static inline void flash_sync_area(Flash *s, int64_t off, int64_t len)
     qemu_iovec_init(&iov, 1);
     qemu_iovec_add(&iov, s->storage + (start * BDRV_SECTOR_SIZE),
                                         nb_sectors * BDRV_SECTOR_SIZE);
-    bdrv_aio_writev(s->bdrv, start, &iov, nb_sectors, bdrv_sync_complete, NULL);
+    blk_aio_writev(s->blk, start, &iov, nb_sectors, blk_sync_complete, NULL);
 }
 
 static void flash_erase(Flash *s, int offset, FlashCMD cmd)
@@ -621,17 +621,17 @@ static int m25p80_init(SSISlave *ss)
 
     s->size = s->pi->sector_size * s->pi->n_sectors;
     s->dirty_page = -1;
-    s->storage = qemu_blockalign(s->bdrv, s->size);
+    s->storage = blk_blockalign(s->blk, s->size);
 
     dinfo = drive_get_next(IF_MTD);
 
     if (dinfo) {
         DB_PRINT_L(0, "Binding to IF_MTD drive\n");
-        s->bdrv = blk_bs(blk_by_legacy_dinfo(dinfo));
+        s->blk = blk_by_legacy_dinfo(dinfo);
 
         /* FIXME: Move to late init */
-        if (bdrv_read(s->bdrv, 0, s->storage, DIV_ROUND_UP(s->size,
-                                                    BDRV_SECTOR_SIZE))) {
+        if (blk_read(s->blk, 0, s->storage,
+                     DIV_ROUND_UP(s->size, BDRV_SECTOR_SIZE))) {
             fprintf(stderr, "Failed to initialize SPI flash!\n");
             return 1;
         }